Nut-lock



(No Model.) 7

A. NEUTASOHER.

NUT LOOK. 7 No. 299.838. Patented June 3, 1884.

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ALLISE NEUTASCHER, OF MENDO'IA, ILLINOIS.

NUT-

LOCK.

SPECIFICATION forming part of Letters Patent No. 299,838, dated June 3,1884-.

Application filed March 11, 1884.

T aZZ whom it may concern:

Be it known that I, ALLIsn NEUTASCHER, of Mendota, in the county of LaSalle and State of Illinois, have invented certain new and usefulImprovements in Nut-Locks; and I do hereby declarethe following to be afull, clear, and exact description of the invention, such as will enableothers skilled in the art to which it pertains to make and use it,reference being had to the accompanying drawings, which form part ofthis specification.

My invention relates to an improvement in nut-locks; and it consists inthe combination of a nut having suitably curved grooves made in itsinner surface with a correspondinglyshaped key, which has a sharp pointupon its outer end, for the purpose of catching in the fishplate, andthus preventing the nut from a turning backward after it has once beentightened in position, as will be more fully described hereinafter.

The object of my invention is to provide a nut-lock which has its outerend to extend outward a suitable distance from the side of the nut, soas to strike against, an obstruction, and thus act as a stop, and whichwill bite into the fish-plate or other surface against which the nut istightened as soon as it is attempted to turn the nut backward.

Figure 1 is a front elevation of a 11ut-lock embodying my invention.Fig. 2 is a side elevation of the same.

A represents a railroad-rail; B, an ordinary screw-bolt; C, the nut; D,the washer, and E the fish-plate. In the inner surface of this nut aremade a number of grooves, as

shown, into any one of which the inner end of the key F is forced. Thiskey consists of a small iron rod or bar of any suitable length, andwhich has a sharp point, G, made upon its outer end, for the purpose ofcatching in the fish-plate when it is attempted to unscrew the nut afterit has once been tightened in place. This sharp point is preferablyformed as shown, so that the. nut can be tightened without anyinterference whatever from the key; but as soon as it is attempted toturn the nut backward the point catches against the surface of thefish-plate, and then the greater the power that is applied in forcingthe nut backward the greater distance is this sharp (No model.)

I point forced into the surface of the fish-plate. By the constructionhere shown it will be seen that the nut can be turned up to any desiredpoint, and then looked securely in place. Even if the sharp point G isnot used, the projecting end of the key will strike against the act as astop to prevent the nut from turning around. The object of the curvedkey and slot is that when used in connection with a fish-plate nut thecurved key can be inserted in the slot of the nut after the nut istightened, and then by turning the nut back a trifle the outer end ofthe key will bear against the flange of the rail, and in that positionwill admit of a lateral as well as a transverse motion of the ends oftherail under the influence of the changes of temperature and the motionsconsequent upon the moving of trains over the rails. Meanwhile the outerend of the key will trail along for a short distance on the flange, andallow of the necessary changes in position of the nutv without itsbecoming loosened.

I am aware that grooves have been made in the inner surface of a nut,and then a suitable locking device applied thereto; but in no case has akey been used which is provided with a locking-point at a distance fromthe side of the nut, and which will allow the nut to be freely tightenedin place without becom ing loosened or displaced, and which will thenprevent the nut from being removed.

Having thus described my invention, I c1ai1n- The combination of a nuthaving curved grooves made in its inner face with the curved key capableof being inserted into the groove after the nut is screwed down nearlyor quite to its seat, which has its outer end to project a suitabledistance beyond the side of the nut, and which may be provided at itsouter end with a sharp point to catch in the surface of the articleagainst which the nut is clamped, substantially as shown.

In testimony whereof I afix my signature in presence of two witnesses.

ALLISE NEUTASOHER.

\Vitnesses:

It. D. DOBBER, O. Bunny.

top and bottom flange of the rail, and thus

